title: Synthesis and molecular properties of four isomeric dialkylated angular-shaped naphthodithiophenes.
abstract: A new strategy to synthesize 4,9- and 5,10-dialkylated α-aNDTs as well as 4,9- and 5,10-dialkylated β-aNDTs is described. Four isomeric precursors with different dithienyl-ene-diyne arrangements undergo base-induced double 6π-cyclization to construct the central naphthalene cores, leading to the formation of the regiospecific products. These 2,7-distannylated dialkylated aNDT-based monomers can be used for Stille cross-coupling to produce promising conjugated materials for various optoelectronic applications.
authors.affiliation: Department of Applied Chemistry, National Chiao Tung University 1001 Ta Hsueh Road, Hsin-Chu Taiwan.
authors.forename: Sheng-Wen
authors.initials: SW
authors.lastname: Cheng
authors.forename: De-Yang
authors.initials: DY
authors.lastname: Chiou
authors.forename: Yu-Ying
authors.initials: YY
authors.lastname: Lai
authors.forename: Ruo-Han
authors.initials: RH
authors.lastname: Yu
authors.forename: Chia-Hao
authors.initials: CH
authors.lastname: Lee
authors.forename: Yen-Ju
authors.initials: YJ
authors.lastname: Cheng